/* ---------- tokens ---------- */
:root {
  /* night sky */
  --night-1: #05030c;
  --night-2: #0a0713;
  --night-3: #120a1e;
  --stone-1: #1a1424;
  --stone-2: #251b32;

  /* vellum / warm page */
  --vellum-1: #f0e0b6;
  --vellum-2: #e6d29a;
  --vellum-3: #d8be82;
  --vellum-ink: #2a1a08;
  --vellum-ink-soft: #4a2d10;

  /* candle warmth */
  --wax-1: #f2c66a;
  --wax-2: #e69a2b;
  --wax-3: #b6741f;
  --wax-glow: #ffdb8a;
  --flame: #fff2c2;

  /* illumination */
  --gold: #d9a441;
  --gold-bright: #f2c66a;
  --lapis: #2b4a8a;
  --vermilion: #b23a2b;
  --emerald: #3f6b4a;

  /* muted ink for dark UI */
  --ink-1: #f0e0b6;
  --ink-2: #c8b48a;
  --ink-3: #8a7a5c;

  --radius: 2px;

  --font-serif: "EB Garamond", "Cormorant Garamond", Georgia, serif;
  --font-display: "Cormorant Garamond", "EB Garamond", Georgia, serif;
  --font-gothic: "UnifrakturMaguntia", "Cormorant Garamond", serif;
  --font-pixel: "VT323", ui-monospace, monospace;

  --tap: 44px;
}

/* ---------- base ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; background: var(--night-1); color: var(--ink-1); }
body {
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.62;
  min-height: 100dvh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

::selection { background: var(--wax-1); color: var(--night-1); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

/* ---------- night sky background ---------- */
.sky {
  position: fixed; inset: 0;
  background:
    radial-gradient(1200px 700px at 50% -10%, #1a1230 0%, transparent 60%),
    radial-gradient(900px 600px at 10% 110%, #0e0a20 0%, transparent 60%),
    linear-gradient(180deg, var(--night-1) 0%, var(--night-2) 60%, #08050f 100%);
  z-index: -3;
  pointer-events: none;
}
.stars {
  position: absolute; inset: 0;
  background-image:
    radial-gradient(1px 1px at 20px 30px, #fff8dc 50%, transparent 51%),
    radial-gradient(1px 1px at 80px 120px, #f2c66a 50%, transparent 51%),
    radial-gradient(1px 1px at 160px 60px, #ffffff 50%, transparent 51%),
    radial-gradient(1px 1px at 220px 200px, #f5e5b0 50%, transparent 51%),
    radial-gradient(1px 1px at 300px 90px, #fff8dc 50%, transparent 51%),
    radial-gradient(1px 1px at 40px 260px, #f2c66a 50%, transparent 51%),
    radial-gradient(1px 1px at 120px 340px, #ffffff 50%, transparent 51%),
    radial-gradient(1px 1px at 260px 420px, #f5e5b0 50%, transparent 51%);
  background-size: 340px 480px;
  opacity: 0.75;
  animation: twinkle 6s ease-in-out infinite;
}
.stars--slow {
  background-position: 60px 20px;
  opacity: 0.45;
  animation: twinkle 11s ease-in-out infinite reverse;
}
@keyframes twinkle {
  0%, 100% { opacity: 0.75; }
  50% { opacity: 0.35; }
}
.moon {
  position: absolute;
  top: 8vh; right: 12vw;
  width: 46px; height: 46px;
  background: radial-gradient(circle at 35% 35%, #fff5cc 0%, #e6c56a 60%, #b6892e 100%);
  border-radius: 50%;
  box-shadow: 0 0 40px rgba(242,198,106,0.35), 0 0 90px rgba(242,198,106,0.15);
  opacity: 0.7;
}

/* ---------- pixel arches (stone frame) ---------- */
.arches {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
}
.arch {
  position: absolute; top: 0; height: 100vh;
  width: 22vw; max-width: 140px; min-width: 40px;
  opacity: 0.85;
  filter: drop-shadow(0 0 20px rgba(0,0,0,0.6));
}
.arch--left { left: 0; }
.arch--right { right: 0; transform: scaleX(-1); }

/* ---------- topbar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(6px);
  background: linear-gradient(180deg, rgba(5,3,12,0.92) 0%, rgba(5,3,12,0.7) 100%);
  border-bottom: 1px solid rgba(217,164,65,0.18);
}
.topbar__inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px;
  max-width: 720px; margin: 0 auto;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  text-decoration: none;
  color: var(--vellum-1);
}
.brand__mark {
  width: 26px; height: 26px;
  color: var(--gold-bright);
  image-rendering: pixelated;
  filter: drop-shadow(0 0 6px rgba(255,219,138,0.6));
}
.brand__mark .flame {
  animation: flame 1.4s ease-in-out infinite alternate;
  transform-origin: center bottom;
}
@keyframes flame {
  0% { transform: translateY(0) scaleY(1); opacity: 1; }
  100% { transform: translateY(-1px) scaleY(1.15); opacity: 0.85; }
}
.brand__text {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 20px;
  letter-spacing: 0.08em;
}
.nav-toggle {
  width: var(--tap); height: var(--tap);
  display: inline-flex; flex-direction: column; justify-content: center; gap: 4px;
  padding: 12px;
  border: 1px solid rgba(217,164,65,0.25);
  border-radius: 3px;
}
.nav-toggle span {
  display: block; height: 2px; background: var(--gold-bright); border-radius: 1px;
  transition: transform .25s ease, opacity .25s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.eranav {
  display: none;
  flex-direction: column;
  gap: 2px;
  padding: 8px 12px 14px;
  border-top: 1px solid rgba(217,164,65,0.14);
  background: rgba(10,7,19,0.96);
  max-width: 720px; margin: 0 auto;
}
.eranav.open { display: flex; }
.eranav a {
  display: block;
  padding: 12px 12px;
  text-decoration: none;
  color: var(--vellum-1);
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 0.04em;
  border-left: 2px solid transparent;
  border-radius: 2px;
  transition: background .2s, border-color .2s, color .2s;
}
.eranav a:hover, .eranav a:focus-visible, .eranav a.active {
  background: rgba(217,164,65,0.08);
  border-left-color: var(--gold-bright);
  color: var(--wax-glow);
  outline: none;
}

@media (min-width: 760px) {
  .nav-toggle { display: none; }
  .eranav { display: flex; flex-direction: row; gap: 4px; border-top: 0; padding: 0 16px 8px; background: transparent; }
  .eranav a { padding: 8px 12px; font-size: 15px; border-left: 0; border-bottom: 2px solid transparent; }
  .eranav a.active { border-left: 0; border-bottom-color: var(--gold-bright); }
}

/* ---------- layout ---------- */
main {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 18px 40px;
  position: relative;
  z-index: 1;
}

.folio {
  margin: 32px 0 40px;
}

/* frontispiece */
.folio--frontis {
  padding-top: 32px;
  text-align: center;
  position: relative;
  min-height: 78vh;
  display: flex; flex-direction: column; justify-content: center;
}
.frontis__inner {
  padding: 8px 6px 12px;
}
.eyebrow {
  font-family: var(--font-pixel);
  font-size: 16px;
  letter-spacing: 0.28em;
  color: var(--gold-bright);
  text-transform: uppercase;
  margin: 0 0 12px;
  opacity: 0.9;
}
.display {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(40px, 12.5vw, 74px);
  line-height: 0.95;
  margin: 0 0 18px;
  color: var(--vellum-1);
  letter-spacing: 0.02em;
  text-shadow: 0 0 40px rgba(242,198,106,0.15);
}
.display__word {
  display: block;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: 0.82em;
  color: var(--gold-bright);
  letter-spacing: 0.03em;
  margin-top: 2px;
  text-shadow: 0 0 24px rgba(242,198,106,0.25);
}
.display__sub {
  display: block;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(15px, 4.2vw, 19px);
  line-height: 1.5;
  color: var(--ink-2);
  margin-top: 14px;
  letter-spacing: 0.01em;
  max-width: 30ch;
  margin-left: auto; margin-right: auto;
}
.drop {
  font-family: var(--font-gothic);
  font-size: 1.28em;
  color: var(--gold-bright);
  vertical-align: baseline;
  text-shadow: 0 0 18px rgba(242,198,106,0.5);
  padding-right: 0.02em;
}
.lede {
  font-size: 17px;
  color: var(--ink-1);
  max-width: 40ch;
  margin: 0 auto 14px;
  line-height: 1.65;
}
.lede--muted { color: var(--ink-2); font-style: italic; }
.cta {
  display: inline-flex; align-items: center; gap: 10px;
  min-height: var(--tap);
  padding: 10px 20px;
  margin-top: 18px;
  border: 1px solid var(--gold);
  color: var(--gold-bright);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 0.06em;
  border-radius: 2px;
  background: rgba(217,164,65,0.05);
  transition: background .25s, box-shadow .25s, transform .2s;
}
.cta:hover, .cta:focus-visible {
  background: rgba(217,164,65,0.14);
  box-shadow: 0 0 26px rgba(242,198,106,0.28);
  outline: none;
}
.cta:active { transform: translateY(1px); }

.ornament {
  color: var(--gold);
  opacity: 0.55;
  max-width: 220px;
  margin: 22px auto 0;
}

/* candles at frontispiece */
.candle {
  position: absolute;
  bottom: 8%;
  width: 22px;
  image-rendering: pixelated;
}
.candle--left  { left: 8%; }
.candle--right { right: 8%; }
.candle__wax {
  width: 10px; height: 46px; margin: 0 auto;
  background: linear-gradient(180deg, #f7e6b8 0%, #d8b872 50%, #a37f3b 100%);
  border-left: 2px solid #6b3d0d;
  border-right: 2px solid #6b3d0d;
  border-radius: 1px;
}
.candle__holder {
  width: 20px; height: 6px; margin: -2px auto 0;
  background: #4a2810;
  border-top: 2px solid #6b3d0d;
}
.candle__flame {
  width: 6px; height: 12px;
  margin: 0 auto -2px;
  background: radial-gradient(ellipse at 50% 40%, var(--flame) 0%, var(--wax-1) 55%, var(--wax-2) 100%);
  border-radius: 50% 50% 40% 40% / 60% 60% 40% 40%;
  box-shadow:
    0 0 12px rgba(242,198,106,0.9),
    0 0 30px rgba(242,198,106,0.5),
    0 0 60px rgba(242,198,106,0.28);
  animation: flicker 2.4s ease-in-out infinite;
  transform-origin: center bottom;
}
@keyframes flicker {
  0%, 100% { transform: scaleY(1) scaleX(1) translateX(0); opacity: 1; }
  20% { transform: scaleY(1.08) scaleX(0.96) translateX(-0.5px); opacity: 0.95; }
  45% { transform: scaleY(0.94) scaleX(1.04) translateX(0.5px); opacity: 0.9; }
  70% { transform: scaleY(1.1) scaleX(0.94) translateX(-0.5px); opacity: 1; }
}

/* ---------- panels (preface & colophon) ---------- */
.panel {
  background:
    radial-gradient(120% 120% at 50% -10%, rgba(242,198,106,0.06) 0%, transparent 60%),
    linear-gradient(180deg, rgba(26,20,36,0.85) 0%, rgba(18,10,30,0.85) 100%);
  border: 1px solid rgba(217,164,65,0.22);
  border-radius: 3px;
  padding: 22px 20px;
  box-shadow:
    inset 0 0 0 1px rgba(0,0,0,0.3),
    0 20px 50px rgba(0,0,0,0.35);
}
.panel--warm {
  background:
    radial-gradient(140% 120% at 50% 0%, rgba(242,198,106,0.14) 0%, transparent 65%),
    linear-gradient(180deg, rgba(46,32,20,0.7) 0%, rgba(28,18,10,0.8) 100%);
}
.rune {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 26px;
  color: var(--gold-bright);
  margin: 4px 0 12px;
  letter-spacing: 0.02em;
  text-shadow: 0 0 16px rgba(242,198,106,0.25);
}
.key {
  list-style: none; padding: 0; margin: 14px 0 0;
  display: flex; flex-direction: column; gap: 8px;
}
.key li { display: flex; gap: 10px; align-items: baseline; font-size: 16px; color: var(--ink-1); }
.dot {
  width: 8px; height: 8px; border-radius: 50%;
  flex: 0 0 8px;
  margin-top: 6px;
  box-shadow: 0 0 8px currentColor;
}
.dot--eternal { background: var(--gold-bright); color: var(--gold-bright); }
.dot--form { background: var(--lapis); color: var(--lapis); }

/* ---------- eras ---------- */
.era { margin: 44px 0 8px; scroll-margin-top: 72px; }
.era__head {
  text-align: center;
  padding: 12px 4px 6px;
  margin-bottom: 18px;
  position: relative;
}
.era__head::before,
.era__head::after {
  content: "";
  display: block;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(217,164,65,0.5), transparent);
  margin: 12px auto;
  max-width: 320px;
}
.era__years {
  font-family: var(--font-pixel);
  font-size: 16px;
  letter-spacing: 0.24em;
  color: var(--gold-bright);
  text-transform: uppercase;
  margin: 0 0 6px;
  opacity: 0.9;
}
.era__title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(28px, 8vw, 40px);
  color: var(--vellum-1);
  margin: 0 0 8px;
  letter-spacing: 0.02em;
}
.illum {
  font-family: var(--font-gothic);
  font-size: 1.1em;
  color: var(--gold-bright);
  padding-right: 0.06em;
  text-shadow: 0 0 14px rgba(242,198,106,0.45);
}
.era__blurb {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--ink-2);
  max-width: 42ch;
  margin: 6px auto 0;
  font-size: 16px;
  line-height: 1.6;
}

/* ---------- tool folios (illuminated cards) ---------- */
.folios {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex; flex-direction: column;
  gap: 14px;
}
.tool {
  background:
    linear-gradient(180deg, var(--vellum-1) 0%, var(--vellum-2) 100%);
  color: var(--vellum-ink);
  border: 1px solid #8a6b2a;
  border-radius: 3px;
  position: relative;
  box-shadow:
    0 0 0 1px rgba(0,0,0,0.15) inset,
    0 12px 30px rgba(0,0,0,0.45),
    0 0 0 0 rgba(242,198,106,0);
  overflow: hidden;
  transition: box-shadow .3s ease, transform .25s ease;
}
/* vellum grain */
.tool::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(107,61,13,0.06) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(107,61,13,0.08) 0%, transparent 40%),
    repeating-linear-gradient(90deg, rgba(107,61,13,0.03) 0 2px, transparent 2px 6px);
  pointer-events: none;
}
/* left gilded strip */
.tool::after {
  content: "";
  position: absolute; top: 0; bottom: 0; left: 0; width: 6px;
  background: linear-gradient(180deg, var(--gold-bright) 0%, var(--wax-2) 50%, var(--wax-3) 100%);
  box-shadow: 2px 0 6px rgba(0,0,0,0.15);
}

.tool[data-open="true"] {
  box-shadow:
    0 0 0 1px rgba(0,0,0,0.15) inset,
    0 20px 40px rgba(0,0,0,0.5),
    0 0 40px rgba(242,198,106,0.28);
}

.tool__handle {
  display: grid;
  grid-template-columns: 40px 1fr auto;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: var(--tap);
  padding: 14px 14px 14px 18px;
  text-align: left;
  position: relative;
  z-index: 1;
}
.tool__num {
  font-family: var(--font-gothic);
  font-size: 26px;
  color: var(--wax-3);
  line-height: 1;
  text-align: center;
  text-shadow: 0 1px 0 rgba(255,240,200,0.4);
}
.tool__meta { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.tool__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.2;
  color: var(--vellum-ink);
  letter-spacing: 0.005em;
}
.tool__who {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 14px;
  color: var(--vellum-ink-soft);
}
.tool__chev {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--wax-3);
  width: 28px; height: 28px;
  display: inline-grid; place-items: center;
  border: 1px solid rgba(107,61,13,0.35);
  border-radius: 50%;
  transition: transform .3s ease, background .3s ease;
  background: rgba(255,255,255,0.15);
}
.tool[data-open="true"] .tool__chev {
  transform: rotate(180deg);
  background: rgba(107,61,13,0.15);
}

.tool__body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .35s ease;
  position: relative;
  z-index: 1;
}
.tool__body > * { min-height: 0; overflow: hidden; }
.tool[data-open="true"] .tool__body { grid-template-rows: 1fr; }

.tool__body > div,
.tool__body p,
.tool__body { /* no-op selector guard */ }

/* body content wrapper */
.tool__body::before {
  content: "";
  display: block;
  height: 1px;
  margin: 0 18px;
  background: linear-gradient(90deg, transparent, rgba(107,61,13,0.4), transparent);
}
.tool__body p {
  margin: 10px 18px;
  font-size: 16px;
  line-height: 1.65;
  color: var(--vellum-ink);
}
.tool__body p:first-of-type { margin-top: 14px; }
.tool__body p:last-of-type { margin-bottom: 18px; }
.tool__body strong { color: var(--wax-3); font-weight: 700; letter-spacing: 0.01em; }
.tool__body em { color: var(--vermilion); font-style: italic; }

/* ---------- colophon ---------- */
.folio--colophon { margin-top: 40px; margin-bottom: 60px; }
.ornament--top { color: var(--gold-bright); opacity: 0.7; max-width: 240px; margin: 0 auto 10px; }
.benediction { font-style: italic; color: var(--wax-glow); margin-top: 14px; }
.sig {
  text-align: center;
  color: var(--gold-bright);
  margin-top: 22px;
  letter-spacing: 0.08em;
}
.unifrak { font-family: var(--font-gothic); font-size: 1.25em; }

/* ---------- footer ---------- */
.footer {
  text-align: center;
  padding: 20px 16px 40px;
  color: var(--ink-3);
  font-size: 13px;
  font-family: var(--font-pixel);
  letter-spacing: 0.12em;
}
.footer__note { font-family: var(--font-serif); font-style: italic; font-size: 14px; margin-top: 4px; color: var(--ink-3); letter-spacing: 0; }

/* ---------- larger screens ---------- */
@media (min-width: 760px) {
  body { font-size: 18px; }
  main { padding: 0 24px 60px; }
  .folio--frontis { min-height: 82vh; }
  .tool__handle { grid-template-columns: 56px 1fr auto; padding: 18px 18px 18px 24px; }
  .tool__num { font-size: 32px; }
  .tool__name { font-size: 22px; }
  .tool__who { font-size: 15px; }
  .tool__body p { margin: 12px 26px; font-size: 17px; }
  .arch { width: 14vw; max-width: 180px; }
}

/* focus visibility */
:focus-visible {
  outline: 2px solid var(--gold-bright);
  outline-offset: 3px;
  border-radius: 3px;
}
.tool__handle:focus-visible {
  outline-offset: -3px;
}